LightMeter Express vs Cavo Camera

LightMeter Express - Professional Camera Tool Transform your iPhone into a precision light meter for film and digital photography. Get accurate exposure readings with an intuitive interface designed for photographers who demand professional-grade metering capabilities. CORE FEATURES (FREE): • Real-time light metering using your device's camera • Precise aperture, shutter speed, and ISO calculations • Support for all standard camera settings • Clean, professional interface optimized for quick readings • Exposure value (EV) display with compensation controls • Camera settings reference for popular film and digital cameras • Works in any lighting condition your camera can see • Intuitive haptic feedback with "full-stop" detents for exposure drag gestures PERFECT FOR: • Film photographers seeking accurate meter readings • Digital photographers wanting precise exposure control • Studio and outdoor photography • Learning proper exposure techniques • Backup metering when your camera's meter fails PRO FEATURES (One-time $0.99 purchase): • **Spot Metering** - Professional spot metering with zoomed preview for precise exposure readings from specific areas of your scene. Drag to reposition, tap to meter. Works best on iPhones with telephoto lenses for maximum precision • Custom Step Increments - Choose between 1/3, 1/2, or full stop increments for all exposure parameters to match your camera and shooting style • Live Histogram - Real-time histogram display with RGB channel analysis for precise exposure evaluation and highlight/shadow monitoring • Preview Compensation - See exposure compensation effects directly in the camera preview to visualize over/under exposure before shooting • Custom Limits - Set personalized aperture, shutter speed, ISO, and exposure compensation limits to match your specific camera gear and preferences • Black & White Preview - Turn the camera preview into a grayscale image for helping with B&W photography The free version provides full light metering functionality suitable for most photography needs. Pro features add advanced customization and analysis tools for professional and enthusiast photographers. TECHNICAL NOTES: • Requires camera access to function as a light meter • All processing happens locally on your device • No internet connection required • Compatible with iPhone • Spot metering optimized for devices with multiple camera lenses PRIVACY: Light Meter respects your privacy. Camera data is processed locally and never stored or transmitted. No personal information is collected.

Your iPhone. Your cinema camera. Choose the motion you want. Cavo handles exposure, gives you manual control when you need it, and lets you preview your look without changing the recording. Smarter auto Set your frame rate and shutter angle. Shutter-priority auto adjusts exposure around those settings. On compatible cameras, Aperture Priority holds your chosen aperture while Cavo adjusts exposure. Keep exposure and white balance adjusting as you shoot, or lock them when recording starts. Manual when you want it Control ISO, shutter, focus, and white balance from the viewfinder, with manual aperture control on compatible cameras. Check audio levels, available recording time, grid, and horizon level without leaving the camera. Choose shutter angles from 30° to 360°, or use supported longer exposures for more motion blur at a lower recording frame rate. Pick your format Record in H.264, HEVC, or supported ProRes formats. Choose Apple Log, Apple Log 2, HDR, and real open gate when your iPhone and active camera format support them. Recordings are QuickTime MOV files. Microphone access is optional. Cavo records silent video when access is off. See your look. Keep your master. Import .cube LUTs to preview color while you shoot. Monitoring leaves the recorded master unchanged. When you're ready, Quick Grade creates a separate graded HEVC Rec. 709 MOV export and preserves your original. Save where you choose Record to Photos, App Files, a folder you select, or compatible external storage. Optionally save the recording location with your videos. Quick Grade preserves location tags in graded copies, too. Your camera. Your recordings. No account, ads, or analytics. Your recordings stay in the destination you choose. Requires iOS 17 or later. Available codecs, color modes, resolutions, frame rates, lenses, stabilization, and external recording depend on your iPhone, iOS version, and connected hardware. Apple Log 2 and dynamic 4:3 capture require iOS 26 and compatible hardware. Manual aperture control and Aperture Priority require iOS 27 or later and compatible cameras.